foo = [1, 2, 3, 4, 5]
print(foo)
# before
del (foo[0], foo[1]) # on-line
# after
print(foo)
del foo[1]
print(foo)
del foo
x = list(range(15))
print(x)
del x[2:4], x[-1:-3]
print(x)
del x[::1]
print(x)